improve ash compatiblity

surprisingly, [:space:] isn't supported, so just use plain spaces.

home/-shrc

@@ -1,5 +1,5 @@
 #!/usr/bin/env false
-# for zsh, bash, and dash.
+# for ash, dash, bash, and zsh.
 [ -n "$ZSH_VERSION" -o -n "$BASH" ] && FANCY=1 || FANCY=0
 
 # {{{1 utilities
@@ -132,6 +132,7 @@ alias gb='git --no-pager branch' ### @- display the current git branch.
 # being specific {{{2
 
 [ -e "$HOME/python3" ] && alias py="~/python3" || alias py="python3"
+alias ash="busybox ash"
 alias pip="maybesudo -H pip3"
 alias revend='objcopy -I binary -O binary --reverse-bytes=4' ### @- reverse the 4-byte endianness of a single file. *this is an in-place operation!*
 alias aur="BUILDDIR=$HOME/src $HOME/sh/aur -jj"

install

@@ -1,6 +1,6 @@
 #!/usr/bin/env sh
 # this script is compatible with following shells:
-# dash, bash, zsh
+# ash, dash, bash, zsh
 
 VERBOSE="${VERBOSE:-1}"
 

sh/document

@@ -2,6 +2,7 @@
 # NO_ZSH
 # NO_BASH
 # YES_DASH
+# YES_ASH
 # okay, so this probably does run with zsh and bash, but why bother?
 
 # NOTE: a lot of boilerplate code is pulled from the pure sh bible:
@@ -15,13 +16,13 @@ document2() {
     [ "$e" != document ] || return 0 # doesn't play nicely yet, so skip it
     while IFS= read -r line; do
         : $((c+=1))
-        # we only care about lines with our docstring marker on them:
+        # we only care about lines with our docstring marker in them:
         case "$line" in *'###'*) :;; *) continue;; esac
 
         # split by the marker:
         local code="${line%%###*}" docs="${line#*###}"
-        code="${code#${code%%[![:space:]]*}}" # ltrim
-        docs="${docs#${docs%%[![:space:]]*}}" # ltrim
+        code="${code#${code%%[! ]*}}" # ltrim
+        docs="${docs#${docs%%[! ]*}}" # ltrim
 
         local s=' ' n='' # using a space to signify unset
 
@@ -36,7 +37,7 @@ document2() {
                 n="${s%%[!a-zA-Z0-9_-]*}" # substr that word
             done
             s="${docs#@-}" # substr the stuff after the hyphen
-            s="${s#${s%%[![:space:]]*}}" # ltrim
+            s="${s#${s%%[! ]*}}" # ltrim
             ;;
 
         @*-*)
@@ -45,19 +46,19 @@ document2() {
             s="${docs#*-}"
 
             n="${n#@}" # substr the stuff after the at
-            n="${n#${n%%[![:space:]]*}}" # ltrim
-            n="${n%${n##*[![:space:]]}}" # rtrim
+            n="${n#${n%%[! ]*}}" # ltrim
+            n="${n%${n##*[! ]}}" # rtrim
 
-            s="${s#${s%%[![:space:]]*}}" # ltrim
+            s="${s#${s%%[! ]*}}" # ltrim
             ;;
 
         @*)
-            n="${docs#@}"
-            n="${n#${n%%[![:space:]]*}}" # ltrim
+            n="${docs#@}" # substr the stuff after the at
+            n="${n#${n%%[! ]*}}" # ltrim
             ;;
 
         *)
-            s="${docs#${docs%%[![:space:]]*}}" # ltrim
+            s="${docs#${docs%%[! ]*}}" # ltrim
             ;;
         esac